Tracked live by the FAA, but its flight plan was first seen after takeoff, so we don't know the scheduled time and can't say whether it's late.

ALASKA · FLIGHT AS 592 LANDED 6:52 PM PT, ~3 MIN LATE · SCHEDULED TIME UNKNOWN
Yesterday

AS 592 · SEA → ONT

took off 4:53 PM PT · landed 6:52 PM PT (scheduled time unknown)
Forecast issued Tue 10:00 PM ET · 2h after departure

Odds over time

Arrive at ONT more than 15 minutes late?
46% chance · ±0 pts +5 pts · 24h
HOW SURE WE ARE Very high. The odds now come almost entirely from live conditions.
WEATHER FORECASTS LIVE IN THE AIR 0% 15% 30% 45% 60% 1.1d 12h 6h Departs Lands